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April 24th, 2000 Volume 9 No. 6 Update on Pest Management and Crop Development

Coming Events & Current Situation
Diseases
Insects
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Scaffolds is published weekly from March to September by Cornell University -- NYS Agricultural Experiment Station (Geneva), and Ithaca -- with the assistance of Cornell Cooperative Extension.

New York field reports welcomed. Send submissions by 3 p.m. Monday to:

Scaffolds Fruit Journal

Editors: A. Agnello, D. Kain

Dept. of Entomology, NYSAES

Geneva, NY 14456-0462

Phone: 315-787-2341 FAX: 315-787-2326

Scaffolds 00 index

Current DD accumulations

43°F

50°F

(Geneva 1/1-4/24):

228

89

(Geneva 1999 1/1-4/24):

175

65

(Geneva "Normal" 1/1-4/24):

191

81

(Highland 1/1-4/24):

334

147

 

Coming Events:

Ranges:

European red mite egg hatch begins

157-358

74-208

Green apple aphids present

127-297

54-156

Obliquebanded leafroller larvae active

149-388

54-201

Oriental fruit moth 1st catch

129-587

44-338

Pear psylla 1st egg hatch

111-402

55-208

Rosy apple aphid nymphs present

91-291

45-148

Spotted tentiform leafminer 1st oviposition

141-319

48-154

Tarnished plant bug adults active

71-536

34-299

McIntosh at pink

258-356

96-182

Peach at bloom

229-446

95-199

Pear at white bud

217-423

96-217

Plum at bloom

241-394

95-225

Sweet cherry at bloom

187-326

83-150

Tart cherry at white bud

248-326

104-149

 

Phenologies (Geneva):

Apple (McIntosh):

Early Tight Cluster

Apple (Red Delicious):

Early Tight Cluster

Pear (Bartlett):

Green Cluster

Tart Cherry (Montmorency):

Bud Burst

Sweet Cherry:

Early White Bud

Peach:

Early Pink

Plum:

White Bud

(Highland):

Apple (McIntosh):

Pink

Pear (Bartlett):

10% Bloom

Peach:

Early Petal Fall

Plum (Stanley):

Full Bloom

TRAP CATCHES (Number/trap/day)

Geneva

4/10

4/17

4/20

4/24

Green Fruitworm

0.0

0.1

0.0

0.1

Redbanded Leafroller

0.0

2.9*

7.3

0.1

Spotted Tentiform Leafminer

0.0

150*

399

0.0

Highland (Dick Straub, Peter Jentsch):

4/3

4/10

4/17

4/24

Green Fruitworm

0.4

0.0

0.0

0.0

Redbanded Leafroller

3.8

4.7

8.1

11.2

Spotted Tentiform Leafminer

0.1*

2.4

22.9

20.1

Pear Psylla (eggs/50 clusters)

-

-

12.0

51.0

Pear Psylla nymphs/50 clusters

-

1.0*

1.0

3.0

* = 1st catch

PEST FOCUS

Geneva:

After substantial catches of Redbanded Leafroller and Spotted Tentiform Leafminer last week, flights of these insects seem to have been completely shut down by the cold, wet weather of the past several days.

Highland:

Pear Rust Mite observed on Bartlett pear. Low numbers fo Aphids observed on apple foliage.

 

 

> 4.24 Diseases